put (one's) mind at rest(redirected from put someone's mind at rest)
put (one's) mind at rest
To reduce or remove one's worry, anxiety, dread, fear, etc. I know you're anxious to hear how your father is doing after the surgery, so let me put your mind at rest—he's going to make a full recovery. That bonus really put my mind at rest about these debts.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.